Puerto Rico Currency

The currency of Puerto Rico is the U.S. Dollar.
So, both U.S. paper money as well as coins are the standard currency across the entire island.

Puerto Rico was included in the commemorative 50 State Quarters program run by the U.S. mint, along with several other territories and commonwealths, in which the U.S. printed quarters with a design representing a particular state, territory, or commonwealth.
Puerto Rico's quarter was released on March 9, 2009 and featured a sentry box from El Morro Fortress in Old San Juan as well as the state flower of Puerto Rico, the Puerto Rican Hibiscus.
The phrase "Isla del Encanto" imprinted on the coin means "Isle of Enchantment".

Since Puerto Rico is a commonwealth of the United States of America, Puerto Rico relies on the U.S. government to print money and to manage the money supply via the U.S. Federal Reserve and the Central Bank.